Efficiency improvement of power amplifiers

Details Efficiency improvement of power amplifiers Efficiency improvement of power amplifiers

1989-11-01

1991-02-19

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330133, 330134, 330137, 455 93, 455126, 455127, H03G 330

Patent

active

049947575

ABSTRACT:
Circuitry changes the magnitude of power supply voltages to correspond to the desired level of a variable output power. This maximizes the electrical power efficiency of amplifiers. The circuitry also provides for automatic control of the amplitude of the amplifier output signal.

REFERENCES:
patent: 3486128 (1969-12-01), Lohrmann
patent: 3828270 (1974-08-01), Ebisch
patent: 4044308 (1977-08-01), Stites et al.
patent: 4442407 (1984-04-01), Apel

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